Green anthracene dye.



ed new and useful Improvements in Green green on oxidation by the air. 35

Ant-hracene Dye, of which the'following is'a Having now particularly described my specification. invention and in what manner the same is to My invention relates to the production of a be performed, I declare that what I claim new dyestuit oi" the anthracene series from is which avat can .be prepared and which The herein-described new dyestufi of the 40 dyes unmordanted cotton green shades from anthracene series, which can be obtained by sucha vat. treating with nitric acid a mixture ofthe The process for preparing the new dyestufi known dyestufl indanthrene and nitroconsists in treating with nitric acid mixtures benzene, which dyestu'fl is a grayish-green L 1 5"'of the known dyestufl indanthrene (see powder soluble in concentrated su ful'i'c acid 45, United States Letters Patent 682523 dated with a, yellowish-brown color, green flakes if September 1 O, 1901) and nitrobenzene. being precipitated on pouring the solution in In carrying out In new process pactically water, giving a blue vat with hydrosulfite I can proceed as folows, the parts being by and caustic soda lye, which vat dyes llIllllOF weight: 10 parts of a 95 per cent. nitric acid danted cotton blue shades which turn green 5;

threne and 150 parts of nitro nz'ene.

UNITED STATES PATENT OFFICE.

JOSEPPLDEINET, OF ELBERFELD, GERMANY, ASSIGNOR TO FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF ELBERFELD,GERMANY, A CORPORATION OF GERMANY.

GREEN ANTHRACENE DYE.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed March 17, 1908. Serial No. 421,659.

To all whom it may concern:

Be it known that I, JOSEPH DEINET, citizen of the German Empire, residing at Elberleld, Germany, Kingdom of Prussia, have inventarts of indan- The mixture is stirred for several hours and then heated to 6()65 (l. for half an hour. The insoluble part which forms the new product is separated by filtration and washed With alcohol and water. It is a grayish-green powder soluble in concentrated sulfuric acid with a yellowish-brown color, green flakes being precipitated on pouring the solution are added to a mixture of 10 into water. It is almost insoluble in organic solvents and dyes unmordanted cotton from an alkaline vat '(hydrosulfite of sodium and caustic soda). blue shades which turn on oxidation by the air, substantially as described.

- -In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOSEPH DEINET. '[L s.]

Witnesses: v

()T'lO KONIG,

' WASHINGTON BRUNSWICK-g It hereby'c'ertified that in Letters Patent No. 893,837, granted July 1,, 1908,

l upon the application of Joseph Deinet, of Elberfeld, Germany, for an improvement in" Correction in tents ila l Green Anthracene Dye, an error occurs in the printed specification requiring corl rect'li on, as follows: In line 18 the word pactically should read practically; and that the said Letters Patent should be read with this correctiontherein that the same may conform to the record of thelcase in theliatent Office.

Signed and sealed this day of September, A. D., 1908. I

' o. o. BILLING S,

Acting C mmissioner of lfatei t n ed new and useful Improvements in Green green on oxidation by the air. 35

Ant-hracene Dye, of which the'following is'a Having now particularly described my specification. invention and in what manner the same is to My invention relates to the production of a be performed, I declare that what I claim new dyestuit oi" the anthracene series from is which avat can .be prepared and which The herein-described new dyestufi of the 40 dyes unmordanted cotton green shades from anthracene series, which can be obtained by sucha vat. treating with nitric acid a mixture ofthe The process for preparing the new dyestufi known dyestufl indanthrene and nitroconsists in treating with nitric acid mixtures benzene, which dyestu'fl is a grayish-green L 1 5"'of the known dyestufl indanthrene (see powder soluble in concentrated su ful'i'c acid 45, United States Letters Patent 682523 dated with a, yellowish-brown color, green flakes if September 1 O, 1901) and nitrobenzene. being precipitated on pouring the solution in In carrying out In new process pactically water, giving a blue vat with hydrosulfite I can proceed as folows, the parts being by and caustic soda lye, which vat dyes llIllllOF weight: 10 parts of a 95 per cent. nitric acid danted cotton blue shades which turn green 5;

threne and 150 parts of nitro nz'ene.

UNITED STATES PATENT OFFICE.

JOSEPPLDEINET, OF ELBERFELD, GERMANY, ASSIGNOR TO FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF ELBERFELD,GERMANY, A CORPORATION OF GERMANY.

GREEN ANTHRACENE DYE.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed March 17, 1908. Serial No. 421,659.

To all whom it may concern:

Be it known that I, JOSEPH DEINET, citizen of the German Empire, residing at Elberleld, Germany, Kingdom of Prussia, have inventarts of indan- The mixture is stirred for several hours and then heated to 6()65 (l. for half an hour. The insoluble part which forms the new product is separated by filtration and washed With alcohol and water. It is a grayish-green powder soluble in concentrated sulfuric acid with a yellowish-brown color, green flakes being precipitated on pouring the solution are added to a mixture of 10 into water. It is almost insoluble in organic solvents and dyes unmordanted cotton from an alkaline vat '(hydrosulfite of sodium and caustic soda). blue shades which turn on oxidation by the air, substantially as described.

- -In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOSEPH DEINET. '[L s.]

Witnesses: v

()T'lO KONIG,

' WASHINGTON BRUNSWICK-g It hereby'c'ertified that in Letters Patent No. 893,837, granted July 1,, 1908,

l upon the application of Joseph Deinet, of Elberfeld, Germany, for an improvement in" Correction in tents ila l Green Anthracene Dye, an error occurs in the printed specification requiring corl rect'li on, as follows: In line 18 the word pactically should read practically; and that the said Letters Patent should be read with this correctiontherein that the same may conform to the record of thelcase in theliatent Office.

Signed and sealed this day of September, A. D., 1908. I

- o. o. BILLING S,

Acting C mmissioner of lfatei t n Correction in Letters Patent No. 893,661-

5 rection, as follows: In line 18 the word It ie hereby certified that in Letters Patent No. 893,837, granted July 21, 1908, upon the application of Joseph Deinet, of Elberfeld, Germany, "Green Anthracene Dye,

for an improvement in an error occurs in the printed specification requiring cor pactically should read practically; and that the said Letters Patent should be read with this correction therein conform to the record of the case in the Patent Otfice.

Signed and sealed this 8th day of September, A. D., 1908.

IsnALJ that the same may G. O. BILLINGS,

Ar'lm ()mmulswioner of Ialenh. 

